CN102899523A - Zirconium and strontium compound micro-alloyed nickel-aluminum bronze and preparation method thereof - Google Patents
Zirconium and strontium compound micro-alloyed nickel-aluminum bronze and preparation method thereof Download PDFInfo
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- CN102899523A CN102899523A CN2012104189672A CN201210418967A CN102899523A CN 102899523 A CN102899523 A CN 102899523A CN 2012104189672 A CN2012104189672 A CN 2012104189672A CN 201210418967 A CN201210418967 A CN 201210418967A CN 102899523 A CN102899523 A CN 102899523A
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Abstract
The invention relates to a zirconium and strontium compound micro-alloyed nickel-aluminum bronze and a preparation method thereof. The product is characterized by mainly comprising nickel-aluminum bronze, Zr (at the mass percent of 0.02-0.085%) and Sr (at the mass percent of 0.018-0.063%). The preparation process of the alloy is as follows: firstly, fusing the nickel-aluminum bronze, and then adding Al-Sr intermediate alloy and Al-Zr intermediate alloy; secondly, after completely fusing, adding a residue removing agent (for removing impurities), and introducing into high-purity nitrogen for refining; and lastly, pouring into a casting ladle, standing by, removing the residue and casting into an ingot, thereby obtaining the zirconium and strontium compound micro-alloyed nickel-aluminum bronze. Compared with the common nickel-aluminum bronze, the zirconium and strontium compound micro-alloyed nickel-aluminum bronze has the advantages that: the tissue is fine and small; the hardness and the corrosion resistance are increased; the friction coefficient is obviously reduced; and the nickel-aluminum bronze has wide application prospect in the fields of vessel propellers, sea water pumps, offshore oil platforms, seawater pipeline systems, mechanical moulds, bearings working under high speed, high pressure and high environment, lings, turbines, and the like.
Description
Technical field
The present invention relates to a kind of Aluminum-bronze alloy and its preparation method, especially a kind of New Nickel Aluminum-bronze alloy and its preparation method, specifically a kind of zirconium and strontium compound microalloyed nickelaluminium bronze and preparation method thereof.
Background technology
Nickelaluminium bronze has splendid corrosion resistance nature and tribological property, is to make propeller for vessels, pump, valve and the important materials of fastening piece under water.Along with industrial expansion, the performance of nickelaluminium bronze material is had higher requirement.
As everyone knows, alloying and microalloying are the effective means that improves alloy structure and performance.Composition (copper (Cu) 77 ~ 82%, manganese (Mn) 0.5 ~ 4.0%, aluminium (Al) 7.0 ~ 11.0% from nickelaluminium bronze, iron (Fe) 2.0 ~ 6.0%, nickel (Ni) 3.0 ~ 6.0%, zinc (Zn) ￡ 1.0%, surplus is impurity element), this alloy not yet carries out microalloying.Zirconium (Zr) joins in the McGill metals, and (Zr) element of zirconium in alloy graining process and Al form A1
31580 ℃ of Zr(fusing points) the high-melting-point phase such as, the Heterogeneous Nucleation effect of playing is solidified in copper alloy follow-up, the refinement alloy structure, zirconium (Zr) element also can be separated out from copper alloy in the follow-up process of cooling behind alloy graining, and form intermetallic compound (b equates) with the Cu element, with Al element formation intermetallic compound A1
3Zr etc., alloy plays strengthening effect, and stops grain growth.Strontium (Sr) is a kind of active element, and the solid solubility in xantal is minimum.In xantal, add the distributing homogeneity that micro strontium (Sr) can not only effectively purify melt, raising element, and generate SrCu in the process of cooling behind alloy graining
5, the intermetallic compound such as SrCu, reinforced alloys plays a protective role to the scaling loss of zirconium (Zr) element in addition.
Up to the present, China not yet has a kind of zirconium with independent intellectual property right and strontium compound microalloyed nickelaluminium bronze available, this restricted to a certain extent the marine ship propeller of China, sea-water pump, offshore oil platform, seawater pipe, mould and at a high speed, the high speed development of the mechanical component such as the bearing of working under high pressure and the high temperature, lining, turbine.
Summary of the invention
The objective of the invention is on the basis of nickelaluminium bronze main component, by adding trace zirconium element and strontium element, invent a kind of high performance nickelaluminium bronze and preparation method thereof.
One of technical scheme of the present invention is:
A kind of zirconium and strontium compound microalloyed nickelaluminium bronze, it is characterized in that: it mainly is comprised of zirconium (Zr), strontium (Sr) and nickelaluminium bronze, wherein, the mass percent of zirconium (Zr) is 0.02 ~ 0.085%, the mass percent of strontium (Sr) is 0.018 ~ 0.063%, surplus is nickelaluminium bronze, and the mass percent sum of each component is 100%.The blue or green cylinder of described nickel aluminium mainly is comprised of copper (Cu), nickel (Ni), aluminium (Al), manganese (Mn), zinc (Zn), iron (Fe), wherein, the mass percent of nickel (Ni) is 3.0 ~ 6.0%, the mass percent of aluminium (Al) is 7.0 ~ 11.0%, the mass percent of manganese (Mn) is 0.5 ~ 4.0%, the mass percent of zinc (Zn) is ￡ 1.0%, the mass percent of iron (Fe) is 2.0 ~ 6.0%, surplus is copper (Cu) and a small amount of impurity element, and the mass percent sum of each component is 100%.
Two of technical scheme of the present invention is:
The preparation method of a kind of zirconium and strontium compound microalloyed nickelaluminium bronze, it is characterized in that: at first, after the nickelaluminium bronze fusing, add successively Al-Sr master alloy and Al-Zr master alloy, in adding procedure, must add by listed order, add again rear a kind of master alloy after namely must waiting front a kind of master alloy fusing; Secondly, after all melting, add into Cheongju slag agent (removing impurity), then pass into the high pure nitrogen refining; At last, pour casting ladle into, leave standstill rear slagging-off and be cast into ingot; Can obtain zirconium and strontium compound microalloyed nickelaluminium bronze.
The mass percent of Sr is that the mass percent of Zr in 8.901%～10.879%, the Al-Zr master alloy is 3.699%～4.521% in the described Al-Sr master alloy.
The best in quality per-cent of Sr is that the best in quality per-cent of Zr in 9.89%, the Al-Zr master alloy is 4.11% in the described Al-Sr master alloy.
The invention has the beneficial effects as follows:
(1) zirconium of the present invention and strontium compound microalloyed nickelaluminium bronze have the characteristics such as the crystal grain of organizing is tiny, hardness is high, erosion resistance is good, frictional coefficient is low.Such as zirconium of the present invention and strontium compound microalloyed nickelaluminium bronze (take embodiment one as example), its hardness (HV) is 216.025HV, has improved 1.8% than hardness 212.125 HV of conventional nickelaluminium bronze (take Comparative Examples one as example); For another example, by GB GB 10124-88(uniform corrosion test method), it is 20 ℃ in 3.5% NaCl(test temperature) uniform corrosion rate in the solution is that 0.02353 mm/a(is take embodiment one as example), reduced by 3.0% than uniform corrosion rate 0.02424 mm/a of conventional nickelaluminium bronze (take Comparative Examples one as example).
(2) zirconium of the present invention and strontium compound microalloyed nickelaluminium bronze (take embodiment one as example), and on the high-frequency reciprocating friction wear testing machine (frequency 20Hz, load 1N, time 10min, stroke 0.8 ~ 1mm, friction pair part are the Si of diameter 4 mm
3N
4Ball) dry friction coefficient is 0.0245, has reduced by 9.93% than the dry friction coefficient 0.0272 of conventional nickelaluminium bronze (take Comparative Examples one as example); Wet friction coefficient in 3.5%NaCl solution is that 0.0232(is take embodiment one as example), reduced by 13.6% than the wet friction coefficient 0.0251 of conventional nickelaluminium bronze (take Comparative Examples one as example), frictional coefficient significantly reduces.
(3) the present invention has obtained desirable preparation method by a large amount of tests, especially by adopting the method that adds in order each master alloy to control each component content, can easily obtain the nickelaluminium bronze material of satisfactory microalloying by technique of the present invention.
(4) the invention discloses the preparation method of a kind of zirconium and strontium compound microalloyed nickelaluminium bronze, broken to a certain extent abroad the blockade on new techniques of high-performance nickelaluminium bronze, can satisfy Chinese large-sized ship propeller, water pump
,The demand in the field such as valve, sea water desalting equipment.
Description of drawings
Fig. 1 is the zirconium of the embodiment of the invention one and strontium compound microalloyed nickelaluminium bronze metallographic structure.
Fig. 2 is the conventional nickelaluminium bronze metallographic structure of Comparative Examples one of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one
As shown in Figure 1.
A kind of zirconium and strontium compound microalloyed nickelaluminium bronze, its preparation method:
Be formulated as example by 7.1206kg.
At first, with 7kg self-control (seeing Comparative Examples one) or commercially available nickelaluminium bronze (composition: 78.65Cu, 1.05Mn, 9.94Al, 5.8Fe, 4.54Ni, 0.64Zn, numeral among the embodiment before all elements symbol all represents mass percent, add successively 35.4gAl-Sr master alloy (89.85%Al after the fusing down together), 9.89%Sr(also can select between 8.901%～10.879%, together lower), 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 85.2g Al-Zr master alloy (95.69%Al, 4.11%Zr(also can select between 3.699%～4.521%), 0.20%Fe, 0.10%Si) (rate of loss of Zr is about 8%), described master alloy can directly be purchased from the market, also can adopt ordinary method to prepare voluntarily, a kind of master alloy after adding again after the medium front a kind of master alloy fusing of melting process; After all melting, add into Cheongju slag agent (removing impurity), then pass into high pure nitrogen refining 3min; At last, pour casting ladle into, leave standstill insulation 1 ~ 5min after, remove the gred and be cast into ingot; Namely obtain zirconium and strontium compound microalloyed nickelaluminium bronze.
The nickelaluminium bronze of present embodiment through spectrum actual measurement composition is: 4.46% Ni, and 10.06% Al, 1.03 % Mn, 6% Fe, 0.6%Zn, 0.048% Zr, 0.03% Sr, surplus is copper and a small amount of impurity element.
The nickelaluminium bronze fine microstructures (Fig. 1) of present embodiment, its hardness (HV) is 216.025HV, by GB GB 10124-88(uniform corrosion test method), it is 20 ℃ in 3.5% NaCl(test temperature) uniform corrosion rate in the solution is 0.02353 mm/a, under high-frequency reciprocating friction-wear test condition, with Si
3N
4Ball is when rubbing, and aerial dry friction coefficient is 0.0245, and the wet friction coefficient in 3.5%NaCl solution is 0.0232.
Embodiment two.
A kind of zirconium and strontium compound microalloyed nickelaluminium bronze, its preparation method:
Be formulated as example by 7.1206kg.
At first, with 7.005kg nickelaluminium bronze (composition: 78.96Cu, 1.09Mn, 9.94Al, 5.02Fe, 4.41Ni, 0.38Zn, numeral among the embodiment before all elements symbol all represents mass percent, lower with) add successively 30.4gAl-Sr master alloy (89.85%Al, 9.89%Sr after the fusing, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 85.2g Al-Zr master alloy (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si) (rate of loss of Zr is about 8%), described master alloy can directly be purchased from the market, also can adopt ordinary method to prepare voluntarily, a kind of master alloy after adding again after the medium front a kind of master alloy fusing of melting process; After all melting, add into Cheongju slag agent (removing impurity), then pass into high pure nitrogen refining 3min; At last, pour casting ladle into, leave standstill insulation 1 ~ 5min after, remove the gred and be cast into ingot; Namely obtain zirconium and strontium compound microalloyed nickelaluminium bronze.
The nickelaluminium bronze of present embodiment through spectrum actual measurement composition is: 4.3% Ni, and 10.90%Al, 1.07 % Mn, 5.18% Fe, 0.37%Zn, 0.048% Zr, 0.025% Sr, surplus is copper and a small amount of impurity element.
Embodiment three.
A kind of zirconium and strontium compound microalloyed nickelaluminium bronze, its preparation method:
Be formulated as example by 7.1206kg.
At first, with 7.062kg self-control (seeing Comparative Examples one) or commercially available nickelaluminium bronze (composition: 78.65Cu, 1.05Mn, 9.94Al, 5.8Fe, 4.54Ni, 0.64Zn, numeral among the embodiment before all elements symbol all represents mass percent, add successively 21.6gAl-Sr master alloy (89.85%Al after the fusing down together), 9.89%Sr(also can select between 8.901%～10.879%, together lower), 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 37.66 Al-Zr master alloy (95.69%Al, 4.11%Zr(also can select between 3.699%～4.521%), 0.20%Fe, 0.10%Si) (rate of loss of Zr is about 8%), described master alloy can directly be purchased from the market, also can adopt ordinary method to prepare voluntarily, a kind of master alloy after adding again after the medium front a kind of master alloy fusing of melting process; After all melting, add into Cheongju slag agent (removing impurity), then pass into high pure nitrogen refining 3min; At last, pour casting ladle into, leave standstill insulation 1 ~ 5min after, remove the gred and be cast into ingot; Namely obtain zirconium and strontium compound microalloyed nickelaluminium bronze.
The nickelaluminium bronze of present embodiment through spectrum actual measurement composition is: 4.46% Ni, and 10.06% Al, 1.03 % Mn, 6% Fe, 0.6%Zn, 0.02% Zr, 0.018% Sr, surplus is copper and a small amount of impurity element.
Embodiment four.
A kind of zirconium and strontium compound microalloyed nickelaluminium bronze, its preparation method:
Be formulated as example by 7.1206kg.
At first, with 6.885kg self-control (seeing Comparative Examples one) or commercially available nickelaluminium bronze (composition: 78.65Cu, 1.05Mn, 9.94Al, 5.8Fe, 4.54Ni, 0.64Zn, numeral among the embodiment before all elements symbol all represents mass percent, add successively 75.6gAl-Sr master alloy (89.85%Al after the fusing down together), 9.89%Sr(also can select between 8.901%～10.879%, together lower), 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 160.1g Al-Zr master alloy (95.69%Al, 4.11%Zr(also can select between 3.699%～4.521%), 0.20%Fe, 0.10%Si) (rate of loss of Zr is about 8%), described master alloy can directly be purchased from the market, also can adopt ordinary method to prepare voluntarily, a kind of master alloy after adding again after the medium front a kind of master alloy fusing of melting process; After all melting, add into Cheongju slag agent (removing impurity), then pass into high pure nitrogen refining 3min; At last, pour casting ladle into, leave standstill insulation 1 ~ 5min after, remove the gred and be cast into ingot; Namely obtain zirconium and strontium compound microalloyed nickelaluminium bronze.
The nickelaluminium bronze of present embodiment through spectrum actual measurement composition is: 4.46% Ni, and 10.06% Al, 1.03 % Mn, 6% Fe, 0.6%Zn, 0.085% Zr, 0.063% Sr, surplus is copper and a small amount of impurity element.
The metallographic of the nickelaluminium bronze behind the combined microalloying of embodiment two～four forms close with embodiment one, and also tiny in a organized way mutually, hardness and erosion resistance obviously are better than not carrying out the nickelaluminium bronze of scandium Strontium Alloying.
Comparative Examples one.
As shown in Figure 2.
A kind of conventional nickelaluminium bronze is prepared from by the following method
Be formulated as example by 7.2268kg.
At first, after the fusing of 7.2268 kg nickelaluminium bronzes, add into Cheongju slag agent (removing impurity), then pass into high pure nitrogen refining 3min; At last, pour casting ladle into, leave standstill 1 ~ 5min after, remove the gred and be cast into ingot; Namely get conventional nickelaluminium bronze.
The nickelaluminium bronze of this Comparative Examples through spectrum actual measurement composition is: 4.54% Ni, and 8.84%Al, 1.20% Mn, 5.05% Fe, 0.44%Zn, surplus is copper and a small amount of impurity element.
The nickelaluminium bronze of this Comparative Examples is organized thick (Fig. 2), its hardness (HV) is 212.125HV, by GB GB 10124-88(uniform corrosion test method), it is 20 ℃ in 3.5% NaCl(test temperature) uniform corrosion rate in the solution is 0.02424 mm/a, under high-frequency reciprocating friction-wear test condition, with Si
3N
4Ball is when rubbing, and aerial dry friction coefficient is 0.0272, and the wet friction coefficient in 3.5%NaCl solution is 0.0251.
Proportioning and the manufacture method of several common zirconiums and strontium compound microalloyed nickelaluminium bronze have below only been listed, those skilled in the art can be according to above-described embodiment, suitably adjust the proportioning of each component and also strictly make by above-mentioned steps, can obtain desirable zirconium and strontium compound microalloyed nickelaluminium bronze.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (4)
1. a zirconium and strontium compound microalloyed nickelaluminium bronze, it is characterized in that: it mainly is comprised of zirconium (Zr), strontium (Sr) and nickelaluminium bronze, wherein, the mass percent of zirconium (Zr) is 0.02 ~ 0.085%, the mass percent of strontium (Sr) is 0.018 ~ 0.063%, surplus is nickelaluminium bronze, and the mass percent sum of each component is 100%.
2. the preparation method of zirconium according to claim 1 and strontium compound microalloyed nickelaluminium bronze is characterized in that:
At first, with after the nickelaluminium bronze fusing, add successively Al-Sr master alloy and Al-Zr master alloy, in adding procedure, must add by listed order, add again rear a kind of master alloy after namely must waiting front a kind of master alloy fusing;
Secondly, after all melting, add into Cheongju slag agent (removing impurity), then pass into the high pure nitrogen refining;
At last, pour casting ladle into, leave standstill rear slagging-off and be cast into ingot;
Can obtain zirconium and strontium compound microalloyed nickelaluminium bronze.
3. preparation method according to claim 2, the mass percent that it is characterized in that Sr in the described Al-Sr master alloy is that the mass percent of Zr in 8.901%～10.879%, the Al-Zr master alloy is 3.699%～4.521%.
4. preparation method according to claim 3, the mass percent that it is characterized in that Sr in the described Al-Sr master alloy is 4.11% for the best in quality per-cent of Zr in best 9.89%, the Al-Zr master alloy.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105671397A (en) * | 2016-01-23 | 2016-06-15 | 中山百鸥医药科技有限公司 | Worm gear of grain packing machine for processing omega-3 fish oil soft capsules |
| CN110284025A (en) * | 2019-07-29 | 2019-09-27 | 江西省鹰潭铜产业工程技术研究中心 | A kind of aluminum-bronze material and preparation method thereof |
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| CN1492064A (en) * | 2003-09-05 | 2004-04-28 | 中国船舶重工集团公司第七二五研究所 | Cast copper alloy for producing sea water pump valve and its preparing method |
| CN101629254A (en) * | 2009-06-25 | 2010-01-20 | 中南大学 | Multi-element composite micro-alloying copper alloy with high strength and high conductivity and preparation method thereof |
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| KR20000059365A (en) * | 1999-03-03 | 2000-10-05 | 황해웅 | Cu-Zn-Al, Sr, Ti, B alloys for EDM(Energy Discharge Machine) wire and its manufacturing method |
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| CN105671397A (en) * | 2016-01-23 | 2016-06-15 | 中山百鸥医药科技有限公司 | Worm gear of grain packing machine for processing omega-3 fish oil soft capsules |
| CN110284025A (en) * | 2019-07-29 | 2019-09-27 | 江西省鹰潭铜产业工程技术研究中心 | A kind of aluminum-bronze material and preparation method thereof |
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